2-(6-cyanohex-2-ynyl)-2-(benzyloxycarbonyl)-3-(methoxycarbonyl)cyclopentanone

(1R,2S)-2-((Z)-6-Cyano-hex-2-enyl)-3-oxo-cyclopentanecarbonyl chloride

trans-(6-carboxyhex-2(Z)-enyl)-3-(hydroxymethyl)cyclopentanone